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P0159 Diagnostic Trouble Code Discussion for November 2010

Heated Oxygen Sensor (Bank 2 Sensor 2) Slow Response

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Trouble Ticket Help Requests for DTC P0159
Help Request Posted
2003 Land Rover Range Rover HSE 4.4L MIL Lamp on VIN: SALME11403
P0159: O2 ageing faultdownstream bank 2 plausibility. Hi guys, this range rover came in with the mil on with a code po159. So we tested the bank 2 o2 sensor wiring had the right voltages and grounds. So we replaced the downstream o2 sensor on bank 2. We kept the vehicle for one day to see if all was well and it w...
November 05, 2010
2004 Alfa Romeo 156 JTS Sele 2.0L Poor Idle Quality, MIL Lamp on VIN: ZAR9320000
P0159: Lamda 2 signal below Cat slow. Cleaned contacts for Lambda 1 and 2, problem came back after 2 weeks. Replaced Lambda 1, problem came back after 1 week. Please help. Thank you
November 15, 2010